What Is the Origin of the Calendar?

The modern calendar borrows influences from a collective of early calendars such as the Jewish, the Babylonian, the Roman, and the Egyptian calendars.

by Mike Cohen

thecollector.com/what-is-the-o…

Books on calendars at PG:
gutenberg.org/ebooks/subject/2…

Maya calendar:
gutenberg.org/ebooks/subject/1…

#history #calendar